Improvement in grain-driers



2 Sheets-Sheet 1.

- H. WOOD, G. H. FOURDRINIER & HASELDEI'N.

GRAIN'DRIER; No. 41 748. Patented Feb. 23, 1864.

zzyxg I 2 Sh eets Sheet 2. H.1WO0D, G. H. POURDRINIER 8514'. L HASELDEN.

GRAIN DRIER.

Patented Feb during its elevation it is also exposed to a draft UNITED STATES PATENT OFFICE.

HENRY WOOD, OF'MONTREAL, CANADA EAST, GEORGE HENRY FOURDRINIER, OF LYN, CANADA WEST, ANDMARGABET L. HASELDEN, (EXECUTRIX OF RICHARD HASELDEN,) or MONTREAL, CANADA EAST.

IMPROVEMENT m. GRAIN-DRIVERS.

Specification forming part r Letters Patent No. 1 1.74s. dutedFehruary 23, 1864.

To all whom it may concern/:1

Be it known that we, HENRY W001). of Montreal, in the Pr'ovince of Canada East, and Gnonon HENRY FOURDRINIER, of Lyn, in the Province-of Canada \Vest, in conjunction with theiate RICHARD Hssnnnnn, now deceased,

hut represented by his widow and exccutrig,

MARGARET L HAsnLnnN, of Montreal aforesaid, have invented a newand usefulimprovement in Apparatus for Drying Grain, 850.; and we do hereby declare that thefollowing is a. full, clear, and exact description of the same,

reference b'ei ng had to the accompanying drawings, forming apart of this specification, in which- Figure 1 represents a longitudinal vertical Section of our invention, the line as m, Fig. 2;

indicating the plane ofsection. Fig. 2 is a t ansverse vertical section of the same, taken in the plane indicated by the line y i Fig. 1,

ing indicated by the linear :10, Fig. 1 Fig. 6"

is a plan -or topview of the same.

Similar letters of reference in the' several views indicate corresponding parts. This invention relates to an apparatus for.

desiccating and curing grain, in which' the grain is exposed to the action ofhot air in a wire-gauze cylinder which revolves by the ac tion of friction-rollers, and without a shaft or gndgeons, and which is provided on its interior with spiral flanges and lifters, whereby the grain is spread and fed slowly toward the discharging end of said cylinder. On leaving the cylinder the grain passes-into a revolving cooler, which is provided with spiral passages or channel,and with 'a series of fan-blowers, so that the grain in passing through said channel is exposed to a draft of cold air, an finally on leaving the cooler the grain is e evated, and

of cold air, so that on being discharged from the apparatus it is perfectly cool and ready for the garners or vessels.

To enable others skilled in the art to make and use my invention, I will proceed to describe it.

A represents a building, made of brick or other suitable material and calculated to have three stories. The upper story is occupied by the cylinder 13, which is constructed of wiregauze and strengthened by a series of hoops, a, and longitudinal 'strips 1), as clearly shown' in Figs. 1, 2, and 3 of the drawings. This cylinder is open at both ends; and in practice it is It is sup-' to be sixty feet (more or less) lon'g. ported on T-iron hoops ii and on grooved wheels a, which are mounted on horizontal shafts c. On imparting a rotary motion to this shaft the friction between the wheels a and-T-iron hoops 66* imparts a rotary'motion to the cylinder without requiring a central Shaft passing through the same or gudgeons projecting from itsheads.

The interior of the cylinder is furnished with three sets of spiral flanges, d, forming a triple screw-thread, and these flanges arejsecured to the interior of the longitudinal bars b, and. serve to strengthen the same and to push the grain forward toward the discharge end of the cylinder. That portion of the cylinder next to the delivery end is provided with a series of twisted or winding shelves or lifters, e, to be used in addition to or independent of the spiral flanges d. The wide end of each of these lifters is secured to one of the longitudinal bars or strips b, and they project inward toward and beyond the cen'ter,and those sides facing toward the delivery end of the cylinder are dropped off, so as to feed the grain forward as the cylinder revolves.

The wire-gauze from which the covering of the cylinder is made is of such a fineness as to prevent the smallest grains for which the eyl-. inder Inay'be used from dropping through or getting between the meshes, and still the openingsbetween said meshes arelarge enough to expose the grain to a current of hot air from below and to let the moisture pass out above. Instead ot'wire-gauze, perforated sheetinetal plates may be used for the purpose of covering the cylinders.

G are a series of steam-coils oI' serpentine pipes, which are arranged under the cylinder B, and which are supplied with steam from a the moisture contained in the latter-is rapidly 1 expelled. A jacket, E, which surrounds the cylinder andtheheating-pipes, and which exductors, After having passed through the 'the rotary cooler G. This cooler is situated,

.sists of two wire'gauze-cylinders, z i, one passboiler, D, in the lowest story of the building. This boileralso supplies the'requisite quantity of steam to drive an engine which serves to impart motion to the various parts of the desiccator. The heat radiating from the steamcoilsC strikes the grains in the cylinder, and

tends up to the louvers F, compels the hot air to pass through the cylinderand conducts the moist air rising from the grain through the louvers out into the open atmosphere.

- The grain is introduced into the cylinder B through a conically-eonstrueted mouth-piece, f, near a window, 9, at one end of the building, (see Fig. 1,) and it may be raised to this mouth-piece from below by means ofan elevator, or it may be conducted to it from garners above by meansof suitable troughs or concylinder the grain is discharged through the action of thespiral flanges dand lifters e, and it is conducted through a chute or tube, 9, to

near one end of the building A, in a compartment, G*, which is separated from themther parts by means of a partition wall or jacket, h, and which communicates with a chimney, H, or with an exhauster, so that a continuous current of air is created through thecompart ment Gr and the cooler G. This coolerlconing round the other, and the space between the two cylinders is occupied by spiral passages 7', through which the grain has to travel before it is allowed to discharge from the cooler.

The interior of the inner cylinder, '5', is occupiedby four (more or less) fan-blowers, k, which rotate on vertical arbors lfand which extendthroughout the full height of the cylinder. The upper endsof the arbors Z carry pinions m, which gear into a cog wheel, m, on the central shaft of the cooler, and by imparting to the cooler a rotary motion each of the fan-blowers receives an independent rotary motion round its own axis, and a strong ourthe manner and for rent of air is thrown against the grain passing;

down through 'the spiral channels between the two cylinders M. a

When the grain has reached the bottom'end of the cooler, it discharges into a pit, I, at the bottom of the compartment G*, and from this pit itis raised by an elevator, J, and discharged through the spout K. Theelevator J passes 'up through the compartment (3*, and consequently is exposed to the vacuumdraft of the chimney H, or ofan exhauster, if such-is used, and by these means the elevator itself acts as an ascending cooler, and the grain,.on-reaeh ing the spout K, is discharged peizt'ectlycool and ready for the garner or vessel. j

It is obvious thattwo or more desiecatingcylinders can be arranged side by side, and the capacity of the apparatus can thus be increased to any desired extent. hat we claim as new, and desire to secure by Letters Patent, is-- y 1-. The employment oruse, for'the purpose of drying grain, of a cylinder, B, revolving on v wheels to, and hubs (4*, secured-to its 'circumference, and provided on its inside with spiral flanges .d and iifterse, substantially in the manner herein shown and'described." I

2. The steam-coils O and jacket E, arranged in combination with the perforated cylinder B, rotated by means of the friction-rollers a, and ljo'uvers F, in the manner and for the purpose set forth. r

3. 'The rotary cooler G,'provided with spiral passages j, between two perforated cylinders, I M, and with fan-blowers k, to. whieh'motion is imparted by a sun-and-planet gear, m m, in the purpose substantially as hereinspecified.

4. The compartment G*, in combination with the cooler G, elevator J, and'chimney H, orits equivalent, constructed'and operating in the manner and for the purpose substantially as described.

HENRY WOOD. GEORGE H. FOURDR-INIER. MARGT. L. HASELDEN.

Witnesses W. L. KINMOND, P. LEIGH'ION KINMOND. 

